CSWA-S Multiple Choice Q- Extended
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What does "elastic deformation" refer to in material science?
- The permanent change in shape after the load is removed.
- The temporary change in shape that returns to the original form after the load is removed.
- The...
What does "elastic deformation" refer to in material science?
- The permanent change in shape after the load is removed.
- ✔✔ The temporary change in shape that returns to the original form after the load is removed.
- The change in color of the material when stressed.
- The change in temperature of the material under load.
Which type of stress analysis would you use to examine how a material behaves under cyclic
loading?
- Thermal stress analysis
- ✔✔ Fatigue stress analysis
- Static stress analysis
- Vibration stress analysis
What does "plastic deformation" mean in material testing?
- ✔✔ Permanent change in shape after the material has been stressed beyond its elastic limit.
- Temporary change in shape that returns to the original form.
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,- Change in the color of the material under stress.
- The change in density of the material after loading.
How is "strain energy" useful in material analysis?
- To measure the thermal expansion of materials.
- ✔✔ To quantify the energy stored in a material due to deformation.
- To determine the material’s electrical conductivity.
- To calculate the weight of the material.
What does "yield strength" indicate in material testing?
- The maximum temperature the material can withstand.
- The material's resistance to corrosion.
- ✔✔ The stress at which a material begins to deform plastically.
- The amount of force needed to break the material.
How is "Modulus of Resilience" calculated and used?
- It measures the density of the material.
- It calculates the maximum amount of plastic deformation before failure.
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,- ✔✔ It is calculated as the area under the stress-strain curve up to the yield point and indicates
the material's ability to absorb energy without permanent deformation.
- It measures the rate of thermal expansion of the material.
What is the role of "contact stress" in simulations?
- To measure the weight of the parts in contact.
- ✔✔ To analyze the stress distribution at the points where parts make contact with each other.
- To determine the color of the contact surfaces.
- To measure the temperature at the contact points.
What does the term "creep" refer to in material science?
- The immediate deformation of a material when subjected to a load.
- The change in color over time due to stress.
- ✔✔ The slow, continuous deformation of a material under constant stress over a long period.
- The increase in material density due to prolonged stress.
What is the purpose of the "strain gauge" in material testing?
- To measure the temperature of the material.
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, - To assess the color change of the material under stress.
- ✔✔ To measure the amount of deformation or strain experienced by a material.
- To calculate the weight of the material.
What does "factor of safety" refer to in engineering design?
- The ratio of the material’s weight to its strength.
- The amount of thermal expansion a material can handle.
- ✔✔ The ratio of the maximum stress a material can withstand to the stress it is actually
subjected to, providing a margin for safety.
- The amount of deformation that is acceptable during use.
How does "thermal stress" impact a material in simulations?
- It measures the color change due to temperature.
- ✔✔ It evaluates the stress caused by changes in temperature, which can lead to expansion or
contraction of the material.
- It calculates the material’s weight under different temperatures.
- It assesses the deformation due to external forces.
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